Well casing



Dec. 1, 1931. J. N. JoHNsoNE'r AL 1,834,734

WELL CASING Filed Oct. 15, 1930 2 Shee's-Sheet 1 INVENTOR. Ese/7l Johnson Larz'n/Zueryield 47% uit' nnnnl mail :u n u n Dec. 1, 1931. J. N. JoHNsoN ET Al. 1,834,734

WELL CASING Filed 0G13. l5, 1930 2 Sheets-Sheet 2 lllllllllllllllulllllllll E D i! E E Duw.,

$63* EES A TTORNE l Patented Dec. 1, 1931 P oFF-ICE.

Y JOSEPH N. IOHNSON'ND IJORIN A. BUTTERFIELD, OF BRWELL, NEBRASKA 'vr/'ELLV CASING Application fnedloct'b'r 15, 1'930. s'eriai No. 488,941.

` signed primarily for Wells fromA which4 a lil large amount'rof water is pumped, such as ycity wells an'dvvells for pump irrigation, but it is -o lbe understood that a casing in accordance With this invention may be employed for any purposes for lwhichitmay be found'ap'plicable, and the invention has for its 'object to provide, in a manner as ,hereinafter set forth, 1r well casing formed of aiplurality of superimposed, connected together, L tubular, concrete units, each provided with a, series of spaced, superposed," circumferentially eX- tending vrows of spacedopenings of pyramidal'c'ontour gradually increasing in width and breadth from the 'outerto vthe inner'face of the unit whereby provision is set up for sand or'other matter thatfstarts through the openings from the outside of the unit to quicklypass thrugh'to the inside ofthe lat'- ter and be pumpedout.

Further objects of the invention are to provide, in a lmanner as hereinafter' set forth, aY well casingformed of apl'uialityof detachvably connected'concrete vunits and' which is simple in its construction and arrangement, strong, durable, compact, thoroughly efficient when used, readily'assembled andcomparatively inexpensiveto'set up. y Y y lVith'the foregoing and other objects in view the invention'consists of the novel construction, combination and rarraiig'emen't of parts as hereinafter more specifically described, and illustrated in the accompanying drawings wherein is shown an embodiment of the invention, but it' is to be understood that changes, variations and modifications can be resorted tor Which fall within the scope ofthe claims hereunto appended. n v

In the drawings` wherein like reference characters' denote rcorresponding parts throughout the several views I Figure l is a fragmentary view' in eleva- 1'. tion and partly in section of a concrete well section of pair ofsuperimposed units connected together.

Figure 3 is a fragmentary view in vertical Vthe section of ajconcrete well casing in accordance with this invention.

Figure lis a section on a line 4 4 of'vFig# ure 3; l l

igure 5 is a section'on a'line'V-vof'Fg'- 55 ure 3.

Figure is an elevation of the form of reinforcing member employed for the body of each ofthe units or sections'of thecasing.

l Figure 17 "is `afragmentary viewin vertical co sectionv ofthe lowermost one of the units.l v

The vwell casing isforined of'a. series -of separate units bolted together. The casing isused1 atthe very beginning of the starting of the well, and ythe units are successively em" ployed, that isto say as each'unitv goes down toa ground level, another unit is addedarid boltedto the lower unit, and so onuntilthe Well is completed. The bolted togetherunits provide a` casing'making a continuoustpipe 70 strong enough so thatV when' the hole ,isdown tothe desired depth'the well isfc'omple'ted. Thev ca sing is especially adapted to quicksand and" other loose slipping formation as there is enough Weight to take it down asfa'st as the core is taken out. l y A As the units of the sectional casing'with the exception of the lowermos't unit are of like construction, but one ofthel upper units will be described, as the descriptionofone will yapply to the others. The upper unitsare designated A and the bottomor lowermos't unit B.` v Y Y Y Each upper unitA comprises a tubular concrete body l of the desired length and of desired' inner and outer diameter. The body 1 in' proximity to each end is formed with a set of spaced openings extending transverselytherethrough and the purpose of such openings Willbe presently referredto. le() The openings in proximity to the upperand lowerA ends of b'ody 1 are indicated at2, v3 respectively. The openings 2 yand 3 lalign with each other. The openingsQ at the top of'one unitalign With the openings-'3 at the '95 bottom vofan adjacent unit, with vthis excepton'that the openings 3 yat'the bottom of the lower one ofthe upper units align with of nings in the top of the lowermost Aunit B W ich will be presently referred to. That is tofsay 10o align with the openings 3 of a superimposed unit Yand the openings 3 at the lower end of a superimposed unit align with the open-ings 2 of a lower unit. Y

The body portion 1 is formed with a series of superposed, equally spaced, circumferentiallyffextending i'ow's of spaced openings or slots of pyramidal contour. The openings or slots are indicated at l. rlhe openings or Y.

slots ofone' rowalign .witlitthe' openings or.` slots of an adjacent row. The openings or slots of each row are closely arranged.'Y The outer rows ofthe openings or slotsof the seslotswd gradually increases Ainl *width Yand breadth :from the .outer to the inner facelof body 1. lThe outer ends of openings oislots l aregof.'rectangular contour. The said rec'- tangular outer ends are disposed lengthwise ofbodyl. i

1 Thebpenings 2, Bare arrangediii lclose proximity :tothe outer rows of said'series of rows'of openings or slots. l Thatjis to say the openings 2 are Apositioned in close` proximity to one outei' row ofthe series and the openings close proxiinitypto the other outer row of thelseriesf-,The openings 2, 3 are positioned at. point-s which align with the non-perfo-v rated yportion ofbody 1,. Embedded inthe body portion 1 is a. set of spaced lengthwise extendingreinforcing members 5 provided adjacent theends thereof with loops 5', 5f Awhich align with the openings 2, 3 respectively.` Extending through each opening 2 or 3 andfthe loop whieh aligns therewith is the shankof aheade'dbolt. The shanks ofthe vbolts project asubstantial distance frointlie outer fac'eof body portionl.l Securing nuts 7 are carried by the shanks of bolts 6.; i

,g f'lfhe upperunitjs-wheir in superimposed po- -sition areconnected,together byV inner and outer I oblong .I coupling straps f8., which coact with y,the :bolts @and Vnuts 7; and mounted in mortisedportions 8 formedin the inner and outer .facesfofzthebody portions 1. Each strap is formed with an opening 8 near each endL vfor-.the passage yof the shank offa bolt.

Each strap. iscommon to-,al pair of units. e v The straps are flush with the outer and-inner faces of the lfoweitand upper {poi-tions of a'unit. @The rnortised portions at the top of one unit `registerwith 'the niortised portions at kthe bottom of an adjacent unit. Whenthe cou-v pling straps S'are inpositionfthe nuts7 bind i against the outer face ofsuch straps and said yunits in connection .with the heads ofthe bolt fxedly Secure the. Straps in Coupling .position .wherebythe upperunits ofthe casing are .,connectedtogetherin ysuperiinposed position. ..2.ThelowerinostunitBj of the casing in;-

.eludes 1 a concrete body portion constructed in the visame .mannerasithefbody portiqnl of ,anyof theupper units,v withtliisexception -portions 15. registering with inortised portions 8 formed in that unit A seated on unit B. Encompassing the part 10 and depending y therefrom is an annular metallic shoe rcries are spaced a substantial distance from ,the ends of body 1. Each of the openings or ferred to generally'at 16 which carries the weight of thesectional casing. The-shoe 16 includes an upperperpendicular part 17 of uniform diameter mounted against the outer portion 9 and indicated ati are of the same i?? arrangement and correspond vto the rows of openings 4 in body portion 1. g The .body portion 9 is provided with reinforcing members 5.2,having the bolts f6 extend through the upper loops .5"5 and certainl of the`l holdfastv devices 18'extend throughthe lowerl'loop 5.

VWhat we claiinfisz--A n A well casingfstructureffcomprising a series of lsuperimposed endwiserabutting,

one-piece Vtubular concrete units, each .being "i provided with a series ofspaced, circumferentially extendingrows of? openings the outer rows o -f said yseries being spaced from theendsfof the unit, each of ysaidy units betweeneacliof said outer rows and the ends vif-f thereof being vprovided with a Ycircumferenytiallyfextending set` ofv spaced openings,

space dsets'of lspaced'pairs of opposed coupling` membersl the. coupling members' of each pair of av set of coupling members be'- Hing, positioned-'against the outer and inner peripheriespf a pair'of units and extending ac i'osS the Joint .between-the abutting ends ofsuchunitsybolts extendingthroughthe openings of eaclrset, said coupling `members carried bythe bolts in the upper set of openings of a lower unit and .in the lower set of openings of that unit vmounted on thesa'id lower" unit',`a`n apertured shoe encompassing the lower portion o'f the lowerinost unit and 1"" extending` outwardly from the latter, the bolts extending through-*the set of lower openings of the lowermost unit passing Vthrough the aperturesin kthe shoe,clainping Vnuts carried byand coactingrwith said bolts i for securing said members` and shoe in position, and spaced reinforcing meansfor,V embedded within and extending lengthwise of i each unit and connected. adjacent, their endsy to .said bolts.

2. A well casing comprising a plurality of superimposed, endwise abutting, hollow one-piece concrete units, each having superposed circumferentially extending rows of openings, spaced inner coupling members positioned against the inner peripheries and extending across the joints between the abutting ends of the units, spaced outer coupling members positioned against the outer peripheries and extending across the joints between the abutting ends of the units, the inner members aligning with the outer members, a shoe encompassing the lower end of the lowermost unit and depending therefrom, headed bolts extending through the upper and lower ends of each of theraligning members and through the openings of the upper and lower ends of each pair of abutting units and through said shoe, clamping nuts mounted on said bolts and lengthwise extending reinforcing members embedded in said units and anchored by said bolts.

3. A well casing comprising a plurality of endwise abutting tubular units, each provided with a series of superposed, spaced circumferentially extending rows of spaced openings, spaced lengthwise extending reinforcing members embedded in each unit and each formed with a loop in proximity to each end thereof, spaced pairs of coupling members, the coupling members of each pair opposing each other, arranged against the inner and outer peripheries and extending across the joints between the abutting ends of the units, and holdfast means including bolts extending through the outer rows of theseries of rows of openings of each unit, through the upper and lower ends of each pair oit' coupling members and through said loops rfor anchoring said coupling and reinforcing members to said units.

In testimony whereof, we aiiix our signatures hereto.

JOSEPH N. JOHNSON.

LORIN A. BUTTERFIELD. 

